The Mouth Is the Orifice of the Digestive System. This means that what is going on with the tongue gives you a pretty good idea of what is going on in the gut. How well we digest food and drink shows up on the tongue. This is visible in the tongue coating and in the tongue color.
Primary groups: people who are emotionally close, know one another well and seek one another's company.he major characteristics of primary and secondary groups are with primary groups they are more close together like in best friends and all. Secondary groups are not that clos â¦ e and not together all the time. 14 people found this useful.
The difference is that primary succession begins in a new environment, like bare rock; secondary succession begins in an area from which a pre-existing community has been removed, such as a burned-out forest.Source(s): Asst Prof Â· 6 years ago.Thumbs up.econdary Succession-succession that begins after a disturbance that has left some of the previous community intact-e.g. abiotic disturbance (i.e. fire and storms) or human disturbance (agriculture, forestry, development) Similarities: 1.